1003000003 has 8 divisors (see below), whose sum is σ = 1054597680. Its totient is φ = 952536480.

The previous prime is 1003000001. The next prime is 1003000021. The reversal of 1003000003 is 3000003001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1003000003 - 2¹ = 1003000001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003000003.

It is not an unprimeable number, because it can be changed into a prime (1003000001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281725 + ... + 285262.

It is an arithmetic number, because the mean of its divisors is an integer number (131824710).

Almost surely, 2^1003000003 is an apocalyptic number.

1003000003 is a deficient number, since it is larger than the sum of its proper divisors (51597677).

1003000003 is an equidigital number, since it uses as much as digits as its factorization.

1003000003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567077.

The product of its (nonzero) digits is 9, while the sum is 7.

The square root of 1003000003 is about 31670.1752915894. The cubic root of 1003000003 is about 1000.9990026613. Note that the first 3 decimals are identical.

Adding to 1003000003 its reverse (3000003001), we get a palindrome (4003003004).

The spelling of 1003000003 in words is "one billion, three million, three", and thus it is an aban number and an uban number.